Abstract: A control device for a ball-hurling machine includes a ball-hurling machine and a control plate. The ball-hurling machine has a body, a receiver and a display provided in the body. The transmitter controls the power of the machine, the mode of balls shot out and the display to show various images of different colors according to the modes of balls shot out. The control plate is separated from the ball-hurling machine, placed at a hitting area, having a transmitter and plural press buttons for control the transmitter to send out various signals to the receiver of the ball hurling machine. Then the ball-hurling machine shoots out balls according to the signal received so that a hitter himself can control operation of the control device to decide the mode of balls hurled out of the machine to get hitting training.